most recent 30 from http://controlsoverload.com 2010-09-09T08:45:29Z http://controlsoverload.com/feeds/user/56 http://www.creativecommons.org/licenses/by-nc/2.5/rdf http://controlsoverload.com/questions/213/how-to-configure-modbus-on-a-cyclades-ts100 Mauli 2010-02-22T15:57:15Z 2010-02-23T14:39:54Z

<p>I have a Cyclades TS100 which is used to communicate with a Modbus Slave.</p> <p>I selected Protocol: Modbus and configured MODBUS Serial Mode: RTU</p> <p>The thing is, I event don't get a connection to the Serial Server on my selected port. What is the secret?</p> <p>(The device itself works fine, even over the Serial Server, if I configure it to Socket Raw and speak to it via Modbus/RTU over TCP)</p> <p><strong>UPDATE:</strong> it seems that sometime in the past it was decided to comment out the modbus service from inetd.conf, so this was the sole reason the communication didn't work.</p>

http://controlsoverload.com/questions/99/what-alternatives-are-there-instead-of-opc-for-pulling-data-from-a-plc/164#164 Mauli 2009-12-18T09:05:32Z 2009-12-18T09:05:32Z

<p>There is always <a href="http://www.openscada.org/" rel="nofollow">OpenSCADA</a> if you are on the Java platform. The website is a bit of a mess at the moment (we are working on it), but if you are interested, just drop us line (info AT inavare DOT net)</p> <p>There is a standalone project to talk to a OPC server written in pure java (Utgard project) which is already in use for quite some time.</p> <p>And we have a brand new implementation of the dave protocol (S7) in pure Java (no dlls required, so it works just fine on linux!) which will be used in some of our projects (although we are not sure at the moment under which kind of license it will be available, if you are interested just let us know).</p> <p>Full disclosure: I'm one of the developers of OpenSCADA</p>